Replace USES=libtool:oldver with USES=libtool or USES=libtool:keepla in
the 32 ports that still use it. Bump PORTREVISION on their dependent
ports except the ones that depend on these:
audio/libogg
audio/libvorbis
devel/pcre
ftp/curl
graphics/jpeg
graphics/libart_lgpl
graphics/tiff
textproc/expat2
textproc/libxslt
In these cases the same trick as in the recent gettext update is used.

- Release ports maintained by games@
games@ team is quite small and inactive, so ports currently assigned
to it cannot be assumed as properly maintained. To not cause confusion
by making it look otherwise, and also to allow and promote adoption
by individual maintainers, release these ports back to the pool. Note
that this does not change the fact that games@ team still takes care
of these ports to excent of its capabilities.
Suggested by: marino

This changes almost all the "gnomehack" only USE_GNOME cases to USES= pathfix.
If a port used other USE_GNOME items it was untouched.
The ports that used other USES were fixed by hand.
PR: ports/177081
Reviewed by: bapt
Approved by: portmgr (miwi)

Update CONFIGURE_ARGS for how we pass CONFIGURE_TARGET to configure script.
Specifically, newer autoconf (> 2.13) has different semantic of the
configure target. In short, one should use --build=CONFIGURE_TARGET
instead of CONFIGURE_TARGET directly. Otherwise, you will get a warning
and the old semantic may be removed in later autoconf releases.
To workaround this issue, many ports hack the CONFIGURE_TARGET variable
so that it contains the ``--build='' prefix.
To solve this issue, under the fact that some ports still have
configure script generated by the old autoconf, we use runtime detection
in the do-configure target so that the proper argument can be used.
Changes to Mk/*:
- Add runtime detection magic in bsd.port.mk

- Update devel/sdl12 to version 1.2.11. Now we employ stock SDL directory
structure (i.e. include/SDL for includes and sdl-config for configuration
binary)
- Update graphics/sdl_ttf to version 2.0.8
- Update graphics/sdl_image to version 1.2.5
- Update audio/sdl_mixer to version 1.2.7
- Update net/sdl_net to version 1.2.6
- Update Mk/bsd.sdl.mk accordingly
- Fix dependent ports to fit the new directory structure and avoid several
API breakages
- Bump up portrevisions for all dependent ports to allow them to be upgraded
by portupgrade/portmaster etc tools
Approved by: kris (portmgr), sem (mentor)